Core/shell rubber toughened polyamide 6: an effective way to get good balance between toughness and yield strength

doi:10.1039/c3ra42612b

CORC > 化学研究所 > 中国科学院化学研究所

	Core/shell rubber toughened polyamide 6: an effective way to get good balance between toughness and yield strength
	Shi, Dean 1,3; Liu, Erwei 1; Tan, Tianyi 1; Shi, Hengchong 2; Jiang, Tao 1; Yang, Yingkui 1; Luan, Shifang 2; Yin, Jinghua 2; Mai, Yiu-Wing 3; Li, Robert K. Y.4
刊名	RSC ADVANCES
	2013
卷号	3 期号:44 页码:21563-21569
ISSN号	2046-2069
DOI	10.1039/c3ra42612b
英文摘要	We have recently shown that by adding 10 to 30 wt% core/shell toughener with a low density polyethylene (LDPE) core and a polybutadiene-g-maleic anhydride (PB-g-MAH) rubber shell to polyamide 6 (PA6), the impact strength of PA6 matrix can be significantly increased by 600-1000%. However, this is at the expense of quite large losses in elastic modulus of 10-25% and tensile yield strength of 30-55%, especially at high core/shell rubber loading (e.g., 30 wt%). In this study, we have redressed this problem by replacing the LDPE core with a polypropylene (PP) core, which has both higher elastic modulus and yield strength than that of LDPE, forming a new core/shell (PP/PB-g-MAH) toughener. When this core/shell toughener containing 5 wt% PB-g-MAH is blended with PA6 in the weight ratios of 10/90 and 30/70, the Izod impact strengths are 390 and 480 J m(-1) (which are 330 and 550% increases compared to neat PA6), and the modulus are 2.37 and 2.13 GPa, and yield strength are 60.2 and 54 MPa, respectively (which represent only 6 and 15% loss of modulus, and 5 and 13% decrease in yield strength relative to neat PA6). These improved results confirm that although the decrease of tensile modulus cannot be avoided with increasing impact strength, increasing the elastic modulus and yield strength of the core material in the rigid core/soft rubber shell toughener is an effective way to obtain a good balance of elastic modulus, tensile yield strength and impact strength.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000326056600068
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46517]
专题	中国科学院化学研究所
通讯作者	Shi, Dean
作者单位	1.Hubei Univ, Fac Mat Sci & Engn, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 3.Univ Sydney, Ctr Adv Mat Technol, Sch Aerosp Mech & Mechatron Engn J07, Sydney, NSW 2006, Australia 4.City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Shi, Dean,Liu, Erwei,Tan, Tianyi,et al. Core/shell rubber toughened polyamide 6: an effective way to get good balance between toughness and yield strength[J]. RSC ADVANCES,2013,3(44):21563-21569.
APA	Shi, Dean.,Liu, Erwei.,Tan, Tianyi.,Shi, Hengchong.,Jiang, Tao.,...&Li, Robert K. Y..(2013).Core/shell rubber toughened polyamide 6: an effective way to get good balance between toughness and yield strength.RSC ADVANCES,3(44),21563-21569.
MLA	Shi, Dean,et al."Core/shell rubber toughened polyamide 6: an effective way to get good balance between toughness and yield strength".RSC ADVANCES 3.44(2013):21563-21569.